... make this product in high quality. D, Amplifier makes in modular construction. Very low internal friction ... static-load operating current, the efficiency of power amplifier has been greatly enhanced. E, Quite quiet, ... signal to noise ratio). F, Calm Audio digital power amplifier process superb technology, Lightweight body and the unique ... 3kg8.3kg8.9kg8.9kg9.6kg10kg10kg 800W Digital Sound Amplifier